Put on your space suits and diving bell helmets, for it's time to step into a time capsule. The 50th anniversary of a historic model, like, say, the Porsche 911 this year, is certain to bring flights of nostalgia. This historical trip with the 1965 Mustang, though - preliminary hype for next year's anniversary, we know - is a swell museum exhibit for anyone who enjoys bygone days of the automobile.